12365022c0
actually have a printer connected or online: - MAKEDEV: remove all signs of lpa add lpctl? devices (minor # = unit + 128) - usr.sbin/Makefile add lptcontrol - sys/i386/isa/lpt.c implement the LP_BYPASS flag: when a unit is opened with this flag set, the printer is not primed, and no check is made to see that the printer is online. This can only be used to pass ioctls. (giving us /dev/lpctl?) - lptcontrol.c use /dev/lpctl? (LP_BYPASS) -f flag removed, -u flag added - lptcontrol.8 document changes in lptcontrol rewrite using mandoc macros Submitted by: Geoff.
114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*
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* Copyright (c) 1994 Geoffrey M. Rehmet
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Geoffrey M. Rehmet
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: lptcontrol.c,v 1.1.1.1 1994/09/03 13:10:09 csgr Exp $
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*/
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#include <ctype.h>
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#include <limits.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <machine/lpt.h>
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#include <sys/errno.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#define PATH_LPCTL _PATH_DEV "lpctl"
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#define DEFAULT_UNIT "0"
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#define IRQ_INVALID -1
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#define DO_POLL 0
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#define USE_IRQ 1
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static void usage(const char * progname)
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{
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fprintf(stderr, "usage: %s -i | -p [-u <unit no.>]\n", progname);
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fprintf(stderr, "\tUnit no. is a value in the range 0 to 3\n");
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fprintf(stderr, "\tThe default unit no is 0 (ie. /dev/lpt0)\n");
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exit(1);
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}
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static void set_interrupt_status(int irq_status, const char * file)
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{
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int fd;
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if((fd = open(file, O_WRONLY, 0660)) < 0) {
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perror("open");
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exit(1);
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}
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if(ioctl(fd, LPT_IRQ, &irq_status) < 0) {
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perror("ioctl");
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exit(1);
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}
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close(fd);
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}
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static char * dev_file(char unit_no)
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{
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static char devname[_POSIX_PATH_MAX+1];
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int len;
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strncpy(devname, PATH_LPCTL, _POSIX_PATH_MAX);
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devname[len = strlen(devname)] = unit_no;
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devname[++len] = '\0';
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return(devname);
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}
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int main (int argc, char * argv[])
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{
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int opt;
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int irq_status = IRQ_INVALID;
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char * unit = DEFAULT_UNIT;
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while((opt = getopt(argc, argv, "ipu:")) != -1)
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switch(opt) {
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case 'i': irq_status = USE_IRQ; break;
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case 'p': irq_status = DO_POLL; break;
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case 'u': unit = optarg;
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if(!isdigit(*unit))
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usage(argv[0]);
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break;
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default : usage(argv[0]);
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}
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if(irq_status == IRQ_INVALID)
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usage(argv[0]);
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set_interrupt_status(irq_status, dev_file(*unit));
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exit(0);
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}
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